Bobbin winding machine



y 1934. E. SCHWEIZER 58,317

BOBBIN WINDING MACHINE Filed Feb. 7, 1930 2 Sheets-Sheet l I I I I r I Iv 5 I I F I I I I r I a I a a r I i O E 2:31 A Zcijzizer y 1934- E.SCHWEIZER 1,958,317

BOBBIN WINDING MACHINE Filed Feb. 7. 1930 2 Shets-Sheet 2 jHrew/a r:

Patented May 8, 1934 Ernst Schweizer, Zurich, Switzerland ApplicationFebruary 7 1930, Serial No. 426,657

In Germany February 8, 1929 6 Claims.

This invention relates to bobbin winding machines and more especially tomachines which are used for winding a thread of artificial silk upon abobbin. In addition to this, my invention relates to a novel method ofoperating bobbin winding machines and of winding thread upon a bobbin.

My invention may be used with advantage for winding cylindrical as wellas conical bobbins which, moreover, may be bevelled at one or both oftheir ends. My invention furthermore provides a novel machine for makingcross-wound bobbins as well as a novel method of winding bobbins of thiskind.

A primary object of my invention, as far as it relates to the method ofwinding bobbins, especially bobbins of artificial silk, consists inproviding possibilities to wind the bobbins at even speed of the thread,independently of their temporary thickness which increases duringwinding, and to dispense at the same time with any roller which hadordinarily been used for driving the bobbin.

A further object of my invention consists in a novel construction of across-winding machine for making cylindrical bobbins.

A still further object of my invention consists in a novel constructionof a cross-winding machine which may be used for winding bobbins whichare bevelled on one or both of their ends.

A still further object of my invention consists in a novel constructionof a cross-winding machine for winding conical. bobbins in which, inaddition to the conical shape, one or both ends of the bobbins may bebevelled. For this special purpose I make use of a change speed drivepermitting to maintain automatically the speed of the thread at aconstant value, while the thickness of the bobbin increases during theprocess of winding. The thread-guide of the present 40 machine, isconnected with a feeding device permitting to vary and adjustautomatically the path of motion of said thread-guide. This feedingdevice in conjunction with a swingable bail will permit adjustment ofthe driving mechanism of the thread-guide with respect to the cam diskin radial direction to the latters axis of rotation and impart aswinging motion to said threadguide relatively to the cam disk. Thisswinging motion now is transmitted, for instance, to a friction drive insuch a manner that the driving disk of said friction drive is displacedwith respect to the driven disk in radial direction towards theperiphery of the latter, this eifecting a gradual reduction of the speedof rotation of the spindle which serves for rotating the bobbin, thusdispensing with the roller for the immediate drive of said bobbin. Inthis manner a uniform speed of the thread to be wound upon the bobbinwill be the result in spite of the increase of the diameter of thelatter during the process of winding. In other words, the speed at whichthe thread is wound upon the bobbin will have a constant value, say, 250meters per minute, and during the process of winding no injuriousstrains whatever will be imposed upon the thread, even in case thelatter is wound at a high speed upon the bobbin. This is of greatimportance, especially when winding threads of artificial silk upon abobbin.

My new winding machine may also be used in connection with conicalbobbins, the cam disk which rotates obliquely around its axle being inthis case controlled by means of a further gearing comprising ellipticalgear wheels, the retardation and acceleration produced thereby beingpositively transmitted to the guide-thread with the result that, inspite of the conical form of the bobbins, the speed at which the threadis wound upon the latter is kept continuously uniform and independent ofthe thickness of the bobbin.

The bobbin winding machine may be constructed according to my inventioneither for winding one bobbin at a time or also for winding a pluralityof bobbins simultaneously.

In the accompanying drawings I have represented two preferred forms ofconstruction of my new machine which serves for the cross-winding ofbobbins, Fig. 1 being a longitudinal section, with several parts inview, of a machine serving for the purpose of uniform cross-winding ofcylindrical bobbins which may be bevelled either at one or both of theirends, Fig. 2 a top-view taken on Fig. 1, several parts being shown insection; Fig. 3 a section on the line AB of Figure 1 of my new bobbinwinding machine as seen in direction from the feeding device, showing inparticular the swinging motion of the thread-guide which motion iscontrolled by said feeding device, Fig. 4 an enlarged detail-view ofsaid feeding device, Fig. 5 a plan-view, partly in section, of a machinefor making cross-wound conical bobbins which may likewise be bevelledeither at one or both of their ends, and Fig. 6 a section along line C-Dof Fig. 5 showing in particular the elliptical wheel gearing whichserves for driving the bobbin at varying angular velocity.

Referring now more particularly to the drawings-in which like parts aredesignated with like reference numeralsthe driving shaft 1 which isoperated by motor power is provided with a keyway 2, a disk 3 formingpart of a friction drive rigidly with the swinging lever '7.

being mounted displaceably in axial direction upon said shaft 1 by meansof a key co-operating with said keyway 2. The friction disk 3 isprovided with a guide cylinder 4 having an angular groove 5, a roller 6mounted at end of a swinging lever 7 engaging with said groove 5. Thefriction disk 3 is in frictional engagement with the driving d sk 8which latter is fixedly connected with the axially displaceable shaft 9.A spring 10 serves for pressing said shaft 9 against the friction disk3, said spring 18 being releasable by means of the lever 11. The shaft 9carries a gear-Wheel 12 which is in mesh on the one hand with agear-wheel 13 on the main shaft and on the other hand with a gear-wheel14 on the spindle 15. The latter carries the reel or bobbincylinder uponwhich the thread of artificial silk is wound to subsequently form thebobbin. The gear-wheel 13 is in mesh with a gear-wheel 14 on the shaft15', the latter serving to drive second bobbin. The shaft 16 carries acam disk 1'? and forms the axis of rotation for said cam disk. Theguide-member 18 forms part of the thread-guide and engages with theperiphery of said cam disk in such a manner that said guide-member 18,

during rotation of the shaft 16, will be positively reciprocated in adirection parallel to the shaft 16, that is to the axis of rotation ofthe cam The guide-member 18 is mounted slidably upon the hollow shaft 21as well as upon a guide-rod 19 which latter is rigidly mounted on bothof its ends within connecting members 20 fast on said hollow shaft 21'.A guide-rod for the thread is slidably mounted within the hollow shaft21, the

'. latter being provided with a longitudinal slot and a screw passingtherethrough and being connected with the member 18 of the thread-guide.The connecting members 20 are mounted rotatably in the wall of thecasing 24 and connected Intermediate the wall 24 of the casing and theconnecting members 20 there are provided two torsional springs 25tending to keep the guide-members 18 in engagement with the periphery ofthe cam .disk 17. One of the members 20 is comiected by way of aflexible wire 26 with a feeding device which is actuated from the mainshaft 16. The latter projects out of the casing 24 and carries atitsprojecting end a disk 27 which is equipped with a groove 28. A crank-pin29 is fixed on said disk 27 radially adjustable thereto and engages withsaid groove 28. The crank-pin 29 actuates the lever 30 swingably mountedupon the shaft 31 and carrying a pawl 32. A feedwheel 33 is mounted uponthe shaft 31, said feedwheel being in rigid connection with a worm 34which transmits motion to the worm-wheel 35. The latter is mounted upona shaft 36 which. drives the worm-wheel 38 by means of the worm .37. Theworm-wheel 38 is mounted upon the shaft 39 which is provided with ahandle and an eccentric 40 fast on said shaft. The Worms and 37 as Wellas the shaft 36 are mounted within a bail 41 which is firmly connectedwith the case; ing 24. A wire 26 leading to the connecting member 20 isfastened to the periphery of the eccentric 40. The cam or eccentric maybe made exchangeable, if desired.

A bail 42 which is bent off at its free end is fixed to the connectingmember 20, the wire 26 being carried over said free end of said bail.The bent off free end of the bail 42 as well as the eccentric 40 are ofsuch conformation that the rotation of the hollow shaft 21 and therewiththe adjustment of the friction wheel 3 will be adjustably dependent uponthe speed of rotation of the shaft 16.

Cress-wound bobbins may be made at a constant speed of the thread duringincreasing diameter of the bobbin in the following manner.

The friction disk 3 which is mounted displaceably upon the motor-drivenshaft 1 is adjusted at the start of the process of winding to bepositioned at the center of the driven disk 8. The spindles 15 and 15upon which the bobbins are wound will thus be given the greatest speedof rotation so that, for instance, 250 meters of thread per m nute maybe wound upon the empty bobbincylinder. The cam disk 17, when rotating,will reciprocate the member 18 which forms part of the thread-guide. Thedisk 27 on the shaft 16 now actuates intermittently the feed-wheel 31 bymeans of the lever 30. Rotation of the feedwheel is transmitted by meansof the worm 34 to the worm-wheel 35, and further to the wormwheel 38 byway of the worm 37. The wormwheel 38 mounted upon the axiallydisplaceable shaft 39 drives the eccentric 40, thus adjusting by meansof the tension wire the bail 42 and therewith also the rod mechanism 18,19, 21 against the action of the spring 25. This motion now serves toadjust the guide-member 18 with respect to the cam disk 17. Moreparticularly, this adjustment is effected towards the center of saiddisk as shown in dotted line in Fig. 3.

The swinging motion of the guide-member 18 around the shaft 31 istransmitted by means of the swinging lever '7 to the friction disk 3which will thus be axially displaced and adjusted upon the driving disk8 in a direction towards the periphery thereof. lhe amount of rotationof the spindles 15 and 15' will now be gradually decreased in accordancewith the increasing diameter of the bobbins and the speed at which thethread is wound upon the bobbin will thus be kept uniform, irrespectiveof the increase of the diameter of the bobbin.

In order to permit threads of widely different diameters to be woundupon the bobbins at even speed of winding, the degree of intermittentfeeding is varied on the feeding device by radially adjusting thecrank-pin 29 on the disk 27, as may be seen from Fig. 4.

After completion of a bobbin the shaft 39 is adjusted until the wheel 38comes out of engagement with the wheel 37. By rotating the shaft 39 intothe position shown in dotted lines in Fig. 3 the disk 14, and therewiththe members 18, 19 and 21, as well as the friction disk 3 will be movedback into their initial position. The wheel 38 is now again caused tocome in engagement with the wheel 37 so that the machine will be readyfor winding another bobbin.

The machine which according to my invention may be used for makingcross-wound conical bobbins having a bevel either at one or both oftheir ends, as indicated in Figs. 5 and 6, is constructed principally inaccordance with the aforedescribed machine, as far as the friction drive1, 2, 3, 4 and 8 for the shaft 16 and the wobbling disk 17 actuating thethread-guide 18-20, 25 and the feeding device 26-30, 32, 33, 38-41 areconcerned. In the present case the drive, however, differs from thedrive of the aforedescribed machine, in that an elliptical gear-wheeldrive is provided instead of the train of plain gear-wheels 12-14.Mounted upon the spindle of the friction wheel 8 is a gear-wheel 42which is in mesh with a gearwheel 43. A further gear-wheel 44 is mountedupon the shaft of the gear-wheel 43, said gearwheel 44 meshing with thegear-wheel 45. This shaftwhich according to the drawing is positioned inthe rear-carries in addition to the gear-wheel 45, for instance, anelliptical gearwheel 47 which is in mesh with an elliptical companiongear-wheel 48 fixed on the main shaft 16.

Upon the main shaft 16 there is also mounted the gear-wheel 49 whichmeshes with the gearwheel 54. The latter is mounted upon the drivingshaft 15 for the bobbin. Upon the shaft 16 there is further mounted thecam disk 1'7 which reciprocates the members 18, 18' of the threadguideupon the shaft 19, 21. The thread directing member 53 guides the threads(not shown) to reciprocate along the bobbin 50 which may, for instance,be of conical conformation and thus the bobbin will be wound crosswise.In order to wind the thread in like manner onto the bobbin 50 on bothpoints 51 and 52 thereof, the bobbin 50 is rotated in the latter case atabout triple speed, the increase of speed being effected by means of theelliptical gear-wheels 47 and 48.

I claim:

1. A cross spool machine for the production of cylindrical or conicalspools with beveled ends, including a power shaft, a frictional geardrive operated by the power shaft, a main shaft driven by the frictionalgear drive, a cam disk on the shaft, a guide shaft arranged parallel tothe main shaft, a thread guide slidable on the guide shaft, said guidecooperating with the cam disk to compel sliding movement of the guidewith the operation of the cam disk, a second guide shaft mountedparallel to the first guide shaft and capable of a movement ofrevolution with respect to the first guide shaft, said thread guidebeing slidably mounted on said second guide shaft, a lever controlled bythe movement of revolution of the second guide shaft for governing thefriction gear drive to control the speed thereof, and means driven bythe main shaft for controlling the position of the lever, said meansincluding an eccentric, and a connection between the eccentric and thesecond guide shaft to impart revolving movement to the second guideshaft in the rotation of the eccentric and thereby operate the lever forcontrolling the speed of the friction gear drive and simultaneouslyswing the thread guide to vary its cooperation with the cam disk.

2. A cross spool machine for the production of cylindrical or conicalspools with beveled ends, in cluding a power shaft, a frictional geardrive operated by the power shaft, a main shaft driven by the frictionalgear drive, a cam disk on the shaft, a guide shaft arranged parallel tothe main shaft, a thread guide slidable on the guide shaft, said guidecooperating with the cam disk to compel sliding movement of the guide inthe operation of the cam disk, a second guide shaft mounted parallel tothe first guide shaft and capable of a movement of revolution withrespect to the first guide shaft, said thread guide being slidablymounted on said second guide shaft, a lever controlled by the movementof revolution of the second guide shaft for governing the friction geardrive to control the speed thereof a grooved disk carried by the mainshaft, a pawl lever operated by said disk, a worm given a step by stepmovement by the pawl lever, a worm gear operated by said worm, aneccentric driven by said worm gear, and a wire carried by the eccentricand connected to the second guide shaft to compel a movement ofrevolution of said shaft for operating the lever for controlling thefriction gear drive and for shifting the thread guide with respect tothe cam'disk.

3. A bobbin winding machine including a power shaft, a main shaft, africtional gear drive between the power shaft and main shaft, a leverfor shifting one of the frictional elements of said drive with respectto the other for varying the speed of the drive, a guide shaft arrangedparallel to the main shaft, a thread guide slidable on the hollow shaft,a second guide shaft on which the thread guide is slidable, said secondguide shaft being connected to and controlling said lever and mountedfor revolution with respect to the first mentioned guide shaft, a camdisk secured on the main shaft and cooperating with the thread guide tocompel traverse of the latter, and mechanism operated by the main shaftand including an eccentric connected to the second guide shaft forcompelling revolution of the latter with respect to the first guideshaft for simultaneously moving the lever and shifting the thread guidewith respect to the cam disk.

4. A bobbin winding machine including a main shaft, a power shaft, afriction drive between said shafts, a lever for shifting one element ofthe friction drive to thereby control the speed thereof, a thread guidemounted for sliding movement, a guide shaft on which the thread guide ismounted for sliding movement and with respect to which it is capable ofrotation, a cam disk mounted on the main shaft, arms projecting from thethread guide and engaging said disk to compel traverse movement of thethread guide in the operation of the disk, means whereby rotativemovement of the thread guide will operate said lever for controlling thespeed of the friction drive, an eccentric, a connection between theeccentric and thread guide to compel rotative movement of the latter forshifting the lever and moving the arms of the thread guide with respectto the cam disk to adjust the length of the traverse of the threadguide, and means controlled by the main shaft for operating theeccentric.

5. A bobbin winding machine including a main shaft, a power shaft, afriction drive for transmitting power from the power shaft to the mainshaft, a lever for shifting one of the elements of the friction drive tocontrol the speed of the drive, a guide shaft arranged parallel to themain shaft, a thread guide slidable on the guide shaft, a second guideshaft mounted for swinging movement with respect to the first mentionedguide shaft, a sliding connection between the thread guide and thesecond guide shaft, a connection between the second guide shaft andlever whereby the swinging movement of the second guide shaft willoperate the lever, a cam disk on the main shaft, arms carried by thethread guide and bearing on opposite sides of the cam disk, said camdisk compelling transverse movement of the thread guide in the operationof the main shaft, an eccentric, and means driven by the main shaft forimparting a step by step movement to the eccentric, and a wire connectedto the eccentric and to the second guide shaft to compel swingingmovement of the latter in the direction of the eccentric.

6. A bobbin winding machine including a power shaft, a main shaft,friction driving means between the power shaft and main shaft, a camdisk arranged at an angle to and mounted on the main shaft, a threadguide, a guide shaft on which the thread guide is slidably mounted, saidthread guide having arms to engage the cam disk to permit said" cam diskto compel transverse movement ofthe thread guide in the operation of themain shaft, asecond guide shaft on which the thread guide is slidablymounted,

sleeves mounted on the first guide shaft andhaving connecting membersextending therefrom to support the second guide shaft, whereby thesecond guide shaft is bodily movable with respect to the first mentionedguide shaft, springs for.

normally holding the guide shafts in normal relative positions, a stepby step mechanism driven by the main shaft, an eccentric, gearing ERNSTSCHWEIZER.

